Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dd20a6eaeaf34a3…

MALICIOUS

PDF

88.0 KB Created: 2021-06-26 09:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 077d7268c551d2cfceba858e5fe53aa5 SHA-1: 3dd0c20b447672cdaf38f0b2c56aa9ebdeec0a31 SHA-256: 6dd20a6eaeaf34a3aad6268ab10c1ea11622c30243ac40ff48343721bbd14116
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF is classified as malicious by ML and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links pointing to compromised WordPress sites, likely serving as a link farm to host malicious content or further phishing lures. The document's structure and heuristic firings strongly suggest it is designed to trick users into believing they are receiving a prize or parcel, leading them to click on malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crysiq.ru/uplcv?utm_term=best+data+collection+methods
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/04434d05fc90f6ff8bfe601b0362e33c/bufilixan.pdf
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c17f7cc0762---12829473046.pdf
    • http://stuarteisbrucklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zobokabadi.pdf
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/b192dac1551d3fc10c33475f9819d159/mulunujepupobe.pdf
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a9fa38d27---xefoze.pdf
    • https://www.kcequipment.com.au/wp-content/plugins/super-forms/uploads/php/files/2e096c9c15115944895c1daafdcef12c/xetukidule.pdf
    • https://mymango.ru/wp-content/plugins/super-forms/uploads/php/files/1bcca5cdf5051a4a75894759888ba891/zijadud.pdf
    • http://utuin.net/files/fckeditor/file/lodinetifub.pdf
    • http://www.lnk-creation.fr/upload/file/7397875194.pdf
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071db26019aa---sivoxobikiralowejuxarudu.pdf
    • http://adamlegal.com/userfiles/file/52739810753.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16091c5613340f---51552140280.pdf
    • http://videofilm-tv.ru/content/File/48896917992.pdf
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b08f5306c5c---zewirav.pdf
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/vmauj3f98euq31qvkrrqabt47o/50521593422.pdf
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1607995e76bb11---66980416097.pdf
    • https://almoheetmanpower.com/public_html/userfiles/file/18280264611.pdf
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/j9eujti4lkjls8ldhab9l0e4r2/gopoz.pdf
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac90c12501f---58306324995.pdf
    • http://rafaelokazakov.com/file/7690226401.pdf
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9f243acb3---tupipaxilogoxaxigojug.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6d6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D6 16792 bytes
font_01_sfnt_off00010ee8.bin
a416488cb8eaeba834613de0aba636a100779f57ec6a59d0f340898a0365a7c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE8 16828 bytes
font_02_sfnt_off00013ab1.bin
01209dcd2cf8e388ffcaf744faa56e7e9da4fb25fa069c19914bdff0ab098321
pdf-font-stream PDF embedded font (sfnt) at offset 0x13AB1 10588 bytes